10.6084/M9.FIGSHARE.19100092.V2
Wessel N. van Wieringen
Wessel N.
van Wieringen
Harald Binder
Harald
Binder
University of Freiburg
University Medical Center Freiburg
Sequential Learning of Regression Models by Penalized Estimation
<p>When data arrive in a sequence of two or more datasets, modeling on the most recent dataset should take previous datasets into account. We specifically investigate a strategy for regression modeling when parameter estimates from previous data can be used as anchoring points, yet may not be available for all parameters, thus, covariance information cannot be reused. A procedure that updates through targeted penalized estimation, which shrinks the estimator toward a nonzero value, is presented. The parameter estimate from the previous data serves as this nonzero value when an update is sought from novel data. This naturally extends to a sequence of datasets with the same response, but potentially only partial overlap in covariates. The iteratively updated regression parameter estimator is shown to be asymptotically unbiased and consistent. The penalty parameter is chosen through constrained cross-validated log-likelihood optimization. The constraint bounds the amount of shrinkage of the updated estimator toward the current one from below. The bound aims to preserve the (updated) estimator’s goodness of fit on all-but-the-novel data. The proposed approach is compared to other regression modeling procedures. Finally, it is illustrated on an epidemiological study where the data arrive in batches with different covariate-availability and the model is refitted with the availability of a novel batch. <a href="https://doi.org/10.1080/10618600.2022.2035231" target="_blank">Supplementary materials</a> for this article are available online.</p>
Genetics
Neuroscience
Biotechnology
69999 Biological Sciences not elsewhere classified
80699 Information Systems not elsewhere classified
19999 Mathematical Sciences not elsewhere classified
Cancer
Plant Biology
Computational Biology
Taylor & Francis
2022
2022-03-31
2023-03-29
Dataset
586052 Bytes
10.1080/10618600.2022.2035231
10.6084/m9.figshare.19100092
CC BY 4.0